MaxxHaul 70367: 5/8" Forged Steel Rotating Hitch Lock with Anodized Aluminum Locking Head Forged Steel Rod Measures at 2-7/8" in Length & 5/8" in Diameter Anodized Aluminum Head with Built in Enclosed Key Slot Cover Keeps Out Dirt and Moisture Set of Dimple Keys Included Add Additional Layer of Theft Deterrent Keys Do Not Release Until Forged Steel Rod Clicks Into Rested/Locked Place Fits All 2" x 2" Class III and IV Hitch Receivers